Why the fuck is cannibalism considered "evil"? In a post-nuclear feudal society where food is scarce and there's constant conflict, eating the flesh of fallen humans is easily one of the most efficient ways to ensure a stable food supply. Murdering innocent people is certainly inexcusable, but when it comes to factions like the Enclave, Raiders and other obviously evil people, you're seriously gonna try to argue that it's okay to blow them to bits with heavy weapony, but it's not okay to eat the bits afterwards?
I get that humans eating each other is an understandable taboo, but it's the fucking wasteland, man! Standards should be a lot lower.